LG CU720 Service Manual page 162

7. CIRCUIT DIAGRAM
MMI CONNECTOR
CN501
21
19
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
22
rev.1.0.3
HSEJ-18S04-25R
rev.1.0.3
DG2011DX-T1-E3
U504
2 6
+VPWR V+ NO UART_RX
R509 100K 1 4
VREG_MSMP_2.7V IN NC
3 5
GND COM UART_RX_IN
EAR_SENSE_N
USB-_RADC
USB_D+
USB+_RINT
TP501
REMOTE_INT
END Ref
R510, C525, U504, VA509, D502, CN501
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Rev.1.0.3
EAR_MIC2P
Rev.D R502 100
HPH_L
R503 100
HPH_R
USB+_RINT
USB-_RADC
EAR_SENSE_N
VBATT
R505
REMOTE_PWR_ON 470K
USB_VBUS
UART_TX
UART_RX_IN
CN502
1
2 4
3
rev.1.0.2
Near to Tantal
VBAT_GND
U502 NUS3065MUTAG U503
1 2
SRC DRAIN IN OUT
5 4
3 4
GATE CNTRL G1 G2
6 3
NFM21PC105B1A3
OUT GND
7 2
VCC IN
8 1
DRAIN_THERMAL
9
OVP
VREG_MSMP_2.7V
C516
1u
U505
1B1 2B1 USB_D-
6 4
1A 2A
7 3
1S 2S
8 2 TP502
1B0 2B0 REMOTE_ADC
9 1
FSA2257L10X
=> N/A (rev.1.0.4)
USB+_RINT
USB_D+
USB-_RADC USB_D-
Rev.1.0.4
Headphone Amp.
HEADSET_AMP_EN
U501
B2
_SDL
B1
_SDR
C501 1u
A1
EAR_R INR
C502 1u
C1
EAR_L INL
A3
PVDD
D1
VREG_MSMP_2.7V SVDD
Rev.1.0.3
VBAT_SENSE
C505
2.2u
+5V_PWR
VREG_MSMP_2.7V
JTAG_PS_HOLD
RESET_IN_N
JTAG_RTCK
OJ501 OJ502 OJ504 OJ505 OJ506
OJ507 OJ508
- 163 -
TPA4411YZH
B4
PGND
A2
SGND
D2
OUTL HPH_L
C2
OUTR HPH_R
D4
PVSS
D3
SVSS
C503
2.2u
C506
2.2u
TP
UAT501
3G 2.5G
1
GND GND
2
RX RX UART_RX_IN
3
TX TX UART_TX
4
VCHAR NC1 +5V_PWR Rev.D
5
ON_SW PM_ON_SW_N
ON_SW
6
VBAT VBATT
VBAT
7
PWR NC2 USB_VBUS
8
URXD NC3 USB_D-
9
UTXD NC4 USB_D+
10
DSR
11
RTS
12
CTS
JTAG
CN503
G1 G2
1 10
JTAG_TCK
2 9
JTAG_TDI JTAG_TMS
3 8
JTAG_TRST_N
4 7
JTAG_TDO
5 6
G3 G4
AXT410164
LGMC
LGE Internal Use Only